This is a suit in equity to set aside two deeds, one . by the plaintiff and wife to one Rutherford, the other by Rutherford and wife to defendant.
The suit was begun in the circuit court of Cooper county, taken by change of venue, on motion of the defendant, to Howard county, where it was tried and final judgment was rendered for the plaintiff cancelling the deeds, reinvesting the title in plaintiff, stating an account between the parties, giving defendant credit for *438the money paid for the cancelled deed, and decreeing partition of the land between plaintiff and defendant, from which judgment the defendant has prosecuted this appeal.
I. At the threshold of the case is raised a ques- - tion of jurisdiction,
Plaintiff resides in Cooper county, the land affected by the deeds in question is in that county, the suit was instituted there, the summons issued to the city of St. Louis, where defendant resides, and was served on him there. Defendant moved the court to dismiss the suit on the ground that the circuit court of Cooper county had no jurisdiction. The motion was- overruled and exception taken.
The position of appellant on this point is that this is a personal suit and could be brought only in the county of his residence or “where the plaintiff resides and the defendant may be found.” Appellant is correct in his general proposition that a court of equity acts in personam.
And since the suit is personal in its character it must seek the person to be affected in the county of his residence regardless of where the thing in controversy may be. [State ex rel. v. Zachritz, 166 Mo. 313.] But our statute (séc. 564, R. S. 1899) has engrafted one exception to that rule. It is said: “Suits for the possession of real estate, or whereby the title thereto may be affected, shall be brought in the county within which such real estate, or some part thereof, is situate.”
Title to real estate is -directly affected in this suit. By the decree appealed from the appellant is divested of title and the plaintiff invested with the same. [Keyte v. Plemmons, 28 Mo. 104; Ensworth v. Holly, 33 Mo. 370; Railroad v. Mahoney, 42 Mo. 467.]
Since the law requires- the suit to be brought in the county in which the land lies, it follows that the summons may be sent to any county in the State where the defendant resides or may be found. It has been so held *439in attachment suits, and the principle is the same in suits of this lánd. [Magrew v. Foster, 54 Mo. 258, l. c. 261; Stone v. Trav. Ins. Co., 78 Mo. 655.]
"We hold that this suit was properly brought in the circuit court of Cooper county.
II. In the original petition. filed the plaintiff alleged that Rutherford, to whom he made the deed, was the undisclosed agent of defendant in the transaction, and that plaintiff’s deed to Rutherford was induced by fraudulent representations of defendant to whom Rutherford shortly made his deed. The interest in the land which the plaintiff alleged in his first petition that he owned at the time he made his deed to Rutherford was an undivided one-fourth, while the defendant owned •the rest. But on the first day of the term to which the original summons was returnable the plaintiff by leave of court filed an amended petition and in that he made the.statement that at the time he made the deed to Rutherford, he and the defendant were both under the belief that he owned only an undivided' one-fourth of the land and the defendant the rest, whereas by certain facts therein stated, of which, at the time, both he and the defendant were ignorant, but which he had since discovered, he, in fact, owned an undivided one-half of the land and that in addition to the fraudulent misrepresentations stated in the original and repeated in the amended petition, the deed to Rutherford was executed under a mistake of fact mutual to plaintiff and defendant.
The defendant filed a motion to strike this amended petition from the files on the grounds that it introduced a new cause of action, and blended two causes, inconsistant in their natures, in one petition, and that the new matter pleaded constituted no ground for relief. This motion was overruled and exception taken.
The motion was properly overruled. The amendment only introduced additional facts in support of the original object of the suit which was the cancellation of *440the deeds mentioned. When the plaintiff filed his original petition, both he and defendant (so the amended petition says) were under the belief that their grandmother had elected to take a child’s part of their grandfather’s estate and had done so, and! that, in consequence thereof, on the death of their grandmother the one-half the land she owned descended to her daughter the mother of these parties and had passed to the defendant under a deed from her. But after the filing of the original petition, plaintiff discovered that their grandmother had not elected to take a child’s part of her husband’s estate, and in consequence under their grandfather’s will each was the owner of an undivided one-half of the land. So the amended petition sought to have the two deeds cancelled on two grounds, fraud on the part of the defendant in obtaining them, and a mutual mistake of a material fact, either one of which was sufficient if sustained by the evidence, and the proof of either fact would not be inconsistent with proof of the other. Besides, if there was any introduction of a new cause of action in the amended petition, the defendant did not stand on his objection, but answered to the merits and went to trial, which was a waiver of his objection. [Scovill v. Glasner, 79 Mo. 449; Holt County v. Cannon, 114 Mo. 514; Sauter v. Leveridge, 103 Mo. 615.]
III. The defendant filed what he now calls his answer and cross-bill, to which the plaintiff filed a reply, saying: “Now at this day comes the plaintiff, by his attorneys, and for reply to the new matter set up in defendants’s answer, denies each and every allegation therein contained and having fully replied to the new matter pleaded in said answer, plaintiff asks judgment as in his petition.”
Before the final hearing the defendant filed a motion for judgment oh the pleadings, assigning many grounds, one of which was, “and the defendant moves the court for judgment pro confesso on the cross-bill *441filed herein, because the matter and allegations therein contained have not been answered, nor denied, but have been confessed. ” ,
The motion was overruled and exception taken.
The point is now presented that where there is an answer containing new matter, and a cross-bill also, there should be a reply to the answer, and an answer to the cross-bill, treating each as a separate pleading.
If we should hold that the rules of code pleading require a separate answer to a cross-bill besides a reply to new matter in the answer, we could not find the plaintiff in fault in that respect, because, if the new matter contained in the pleading filed by the defendant amounts to a cross-bill, it is so blended with matter that is pleaded as affirmative defense that the plaintiff is excused if he could not distinguish the part that was designed as plea in defense from the part that was designed to be a cross-bill. The motion was properly overruled.
IY. We come now to a consideration of the case ,on its merits, and will first consider it in reference to the alleged mutual mistáke. .
■ The plaintiff and defendant are brothers. The land in question comes to them through the will of their grandfather. By this will the testator gave his widow an undivided one-half of the land for life, and at her death that half was to go ,to trustees named, for the use of testator’s daughter for life, and at her death, to her children then living, in fee. The' other half of the land was devised to trustees for the use of testator’s daughter for life and at her death to her children, then living, in fee. In other words the whole estate was given' to trustees for the use of the daughter for life and at her death to her children then living in fee, subject only to a life estate in the testator’s widow in one undivided half. The testator’s daughter was the mother of the parties to this suit, and was his only child and heir, and *442these parties were her only children living at the time of her death.
Within the period prescribed by statute, the widow in due form renounced the provision of the will in her behalf. Also, within the period prescribed by statute, she signed and acknowledged a paper purporting to be an election to take a child’s part of the estate of her deceased husband in lieu of dower. This paper was signed and acknowledged May 27, 1868; she died on ’ October 7th, that year; the paper was not filed in the recorder’s office until March 30,1869, when it was so filed by some one, the record does not show by whom.
In 1894, two years before the deeds now assailed were executed, the mother of these parties made a deed, her husband joining, conveying all her interest in the land to the defendant. The answer states that at that date it was the understanding of all the family that the mother owned an undivided one-half of the land in fee, and a life estate in the other half, with remainder in that half to her children who might be living at the time of her death. So that after the execution of that deed the defendant claims he was the owner of one undivided half in fee, an estate for the life of his mother, with right of immediate possession, in the whole, and a remainder in fee contingent on surviving his mother, in half of the other half, or, if he should be the sole surviving child of his mother, then the whole of the other half. In his brief the defendant still contends that that was the condition of the title when the plaintiff’s deed to Rutherford was made.
There are 815 acres of the land in question, worth thirty-five to forty dollars an acre. The consideration paid by Rutherford to plaintiff for his interest was $800.
At the date of the transaction in question, the plaintiff lived in Cooper county, and the defendant lived in St. Louis. The business seems to have been conducted, partly at least, by letter correspondence. On October 9,1896 (the deed from plaintiff to Rutherford was exe*443cuted October 31, 1896) the defendant wrote a letter to plaintiff which with other statements contained the following : “Now your interest is a contingent remainder, the enjoyment of which is kept from you through the lifetime of your mother, and should she outlive either you or I, we have no interest and our grantees would get nothing. It is, therefore, a bet on the length of life, based upon the mortality tables. I hold my mother’s entire life estate, and your interest is a one-fourth remainder; the three-fourths remaining belong to me in fee, and those three-fourths include the mansion house and the improvements; therefore, your one-fourth would be practically unimproved. ’ ’
Then follows an offer of $600 for the plaintiff’s one-fourth interest and the letter concludes with this clause: “Not many understand the legal status of that estate, but if you should show my statement to a lawyer of any repute, he would assure you that my statement is correct. If you can use my offer to any advantage, let me hear from you. ”
At the time that letter was written the defendant was in correspondence- with Mr. Rutherford, and had authorized him to buy the interest for $800, wbjch was done,' and the title so acquired was transferred to the defendant.
Thus according to the amended petition and the answer and the defendant’s letter written to the plaintiff with a view to purchasing his interest, both parties were under the impression that the plaintiff owned only a contingent remainder in an undivided one-fourth; their minds never met on a sale of an. undivided one-half; their minds never met on a sale of what really would have passed under the deed to Rutherford, if that were a valid deed.
Section 2944, Revised Statutes 1899, provides that a widow who has a child or. children living by her deceased husband may, in lieu of dower, elect to take a child’s part of the land in fee. Section 2945 prescribes *444how that election shall be manifested. It must be by a declaration in writing acknowledged before an officer authorized to take the acknowledgment of deeds and filed for record in the office of the recorder of the county in which letters testamentary were granted within fifteen months after the grant of the same. The proof shows that the widow in this case made the declaration and acknowledged it, but she never filed it for record, and it was never filed in her lifetime.- The filing for record of the declaration is an essential part of the election. It is not like a deed which takes effect upon its delivery and is good between the parties to it and their heirs, even though it was never filed for record. There is no one to whom a declaration of this kind is to be delivered as to a party to it. It is not an act to which there are two parties, there is but one party to it, there is no adversary party to whom it can be delivered, it is a declaration, not to one or to any particular persons, but to all whom it may concern. And to be effectual it must be filed for record by the widow herself or by some one as her agent. After she is dead she has no agent and no one can file it for record. [Welch v. Anderson, 28 Mo. 293; Bryant v. Christian, 58 Mo. 98; Dougherty v. Barnes, 64 Mo. 159; Allen v. Harnett, 116 Mo. 278.]
Defendant contends that even if the election to take a child’s part was not complete according to law, still the mother of these parties was the owner in fee of the one-half of the estate devised to the widow for life-, because when the widow renounced the will, her renunciation had the effect to take that one-half of the estate wholly out of the will and leave it to descend to the heirs.
That is not a correct view of the law. The widow had a right to renounce the provision made for her, but she had no dominion over the interest devised to others. Her renunciation only freed that half of the estate from the life estate therein given her by tbe will, leaving the daughter to take her life estate and her surviving child*445ren the fee in remainder. [Lilly v. Menke, 126 Mo. 190.]
Nor does the statute abolishing estates in tail affect the case; the estate was not given to the daughter for life with remainder to the heirs of her body or any other limitations to keep it in a line of descent beyond the testator’s grandchildren.
Where a contract of,sale is made under a mutual mistake of the parties as to the extent, to a material degree, of the interest to be conveyed, a court of equity will give the injured party relief. [Griffith v. Townley, 69 Mo. 13; Smith v. Patterson, 53 Mo. App. 66; Belknap v. Sealey, 14 N. Y. 143; Bigham v. Madison, 47 L. R. A. 267.]
. The mutual mistake that a court of equity will relieve against is a mistake of fact, and that was the character of mistake made in this case. Both parties understood that their grandmother had made her election to take a child’s part, whereas the fact that the declaration had never been filed by her in the recorder’s office was not discovered by the plaintiff until after he had ■ made his deed to Rutherford, until in fact after he had filed his original petition in this case. And if the de- . fendant knew it and withheld the information, whilst it might possibly affect the plaintiff’s suit on the ground of mutual mistake, it would add strength to it on the other branch of the case. But the chancellor was justified in finding as he did that the mistake was mutual.
This conclusion on this branch of the case is conclusive of the case and makes it unnecessary to go into other questions.
The judgment is affirmed.
All concur, except Robinson, J., absent.